Journal ArticleDOI
Raman spectroscopy in graphene
TLDR
In this article, the authors discuss the first-order and double resonance Raman scattering mechanisms in graphene, which give rise to the most prominent Raman features and give special emphasis to the possibility of using Raman spectroscopy to distinguish a monolayer from few-layer graphene stacked in the Bernal configuration.About:
This article is published in Physics Reports.The article was published on 2009-04-01. It has received 4945 citations till now. The article focuses on the topics: Bilayer graphene & Raman spectroscopy.read more
Citations
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Surfactant-free single-layer graphene in water
George Bepete,George Bepete,Eric Anglaret,Luca Ortolani,Vittorio Morandi,Kai Huang,Kai Huang,Alain Pénicaud,Alain Pénicaud,Carlos Drummond,Carlos Drummond +10 more
TL;DR: It is shown that homogeneous stable dispersions of single-layer graphene (SLG) in water can be obtained by mixing graphenide (negatively charged graphene) solutions in tetrahydrofuran with degassed water and evaporating the organic solvent.
Journal ArticleDOI
Enhanced electrochemical expansion of graphite for in situ electrochemical functionalization.
Yu Lin Zhong,Timothy M. Swager +1 more
TL;DR: An all electrochemical route to functionalized graphene directly from a graphite electrode is described herein obviating the need for defect inducing oxidative or prolonged sonication treatments and presenting a potentially scalable approach for graphene circuit patterning.
Journal ArticleDOI
Excitation profile of surface-enhanced Raman scattering in graphene–metal nanoparticle based derivatives
TL;DR: An in situ method of nucleating gold or palladium nanoparticles in the presence of ethylene glycol as a reducing agent, while simultaneously reducing GO to graphene is described, enabling insight into the electronic pathways available to the graphene-nanoparticle system.
Journal ArticleDOI
Friction and wear characteristics of multi-layer graphene films investigated by atomic force microscopy
TL;DR: In this paper, the number of layers of a few layers of carbon basal plane was determined by atomic force microscopy and Raman spectroscopy, and the wear characteristics were also assessed using the AFM.
Journal ArticleDOI
Nitrogen-functionalized microporous carbon nanoparticles for high performance supercapacitor electrode
Yunhui Zhao,Mingxian Liu,Xiangxiang Deng,Ling Miao,Pranav K. Tripathi,Xiaomei Ma,Dazhang Zhu,Zijie Xu,Zhixian Hao,Lihua Gan +9 more
TL;DR: In this paper, Nitrogen-functionalized microporous carbon nanoparticles (N-MCNs) are prepared by direct carbonization of a novel polymer obtained from the Schiff base reaction of terephthalaldehyde and m -phenylenediamine.
References
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Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
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The electronic properties of graphene
TL;DR: In this paper, the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations, are discussed.
Journal ArticleDOI
Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
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Raman spectrum of graphene and graphene layers.
Andrea C. Ferrari,Jannik C. Meyer,Vittorio Scardaci,Cinzia Casiraghi,Michele Lazzeri,Francesco Mauri,S. Piscanec,Da Jiang,K. S. Novoselov,S. Roth,A. K. Geim +10 more
TL;DR: This work shows that graphene's electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers, and allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.
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Interpretation of Raman spectra of disordered and amorphous carbon
Andrea C. Ferrari,John Robertson +1 more
TL;DR: In this paper, a model and theoretical understanding of the Raman spectra in disordered and amorphous carbon is given, and the nature of the G and D vibration modes in graphite is analyzed in terms of the resonant excitation of \ensuremath{\pi} states and the long-range polarizability of the long range bonding.